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Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia)
Abstract. The representatives of the lacewing families Myrmeleontidae, Ascalaphidae, and Nemopteridae (the suborder Myrmeleontiformia) were studied with reference to the number of testicular follicles in males and the number of ovarioles in females. We have found that the number of follicles is high...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Pensoft Publishers
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6904352/ https://www.ncbi.nlm.nih.gov/pubmed/31844408 http://dx.doi.org/10.3897/zookeys.894.47040 |
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author | Kuznetsova, Valentina G. Maryańska-Nadachowska, Anna Khabiev, Gadzhimurad N. Karagyan, Gayane Krivokhatsky, Victor A. |
author_facet | Kuznetsova, Valentina G. Maryańska-Nadachowska, Anna Khabiev, Gadzhimurad N. Karagyan, Gayane Krivokhatsky, Victor A. |
author_sort | Kuznetsova, Valentina G. |
collection | PubMed |
description | Abstract. The representatives of the lacewing families Myrmeleontidae, Ascalaphidae, and Nemopteridae (the suborder Myrmeleontiformia) were studied with reference to the number of testicular follicles in males and the number of ovarioles in females. We have found that the number of follicles is highly variable, at least in the first two families. In the comparatively more fully explored family Myrmeleontidae, the species studied have three to several hundred follicles per testis, the dominant values being six and five. In Ascalaphidae, two main patterns were revealed: testes with a low number of follicles (six and twelve per testis) and testes with multiple follicles (several dozens). Moreover, differences in the follicle number were often observed both between males of the same species and different testes of a male. In Nemopteridae, considered a sister group to the [Myrmeleontidae + Ascalaphidae] clade, the testes in males were found to consist of six or five follicles each. This implies that a low number of follicles, most likely six, is an ancestral trait in Myrmeleontiformia. All other numbers are thus the derived traits and are probably due to a simple oligomerization or a simple polymerization, the latter process having been very intensive in the evolution of the suborder. Conversely, females were found to have ten ovarioles per ovary in each of the three families studied. |
format | Online Article Text |
id | pubmed-6904352 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Pensoft Publishers |
record_format | MEDLINE/PubMed |
spelling | pubmed-69043522019-12-16 Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia) Kuznetsova, Valentina G. Maryańska-Nadachowska, Anna Khabiev, Gadzhimurad N. Karagyan, Gayane Krivokhatsky, Victor A. Zookeys Research Article Abstract. The representatives of the lacewing families Myrmeleontidae, Ascalaphidae, and Nemopteridae (the suborder Myrmeleontiformia) were studied with reference to the number of testicular follicles in males and the number of ovarioles in females. We have found that the number of follicles is highly variable, at least in the first two families. In the comparatively more fully explored family Myrmeleontidae, the species studied have three to several hundred follicles per testis, the dominant values being six and five. In Ascalaphidae, two main patterns were revealed: testes with a low number of follicles (six and twelve per testis) and testes with multiple follicles (several dozens). Moreover, differences in the follicle number were often observed both between males of the same species and different testes of a male. In Nemopteridae, considered a sister group to the [Myrmeleontidae + Ascalaphidae] clade, the testes in males were found to consist of six or five follicles each. This implies that a low number of follicles, most likely six, is an ancestral trait in Myrmeleontiformia. All other numbers are thus the derived traits and are probably due to a simple oligomerization or a simple polymerization, the latter process having been very intensive in the evolution of the suborder. Conversely, females were found to have ten ovarioles per ovary in each of the three families studied. Pensoft Publishers 2019-12-03 /pmc/articles/PMC6904352/ /pubmed/31844408 http://dx.doi.org/10.3897/zookeys.894.47040 Text en Valentina G. Kuznetsova, Anna Maryańska-Nadachowska, Gadzhimurad N. Khabiev, Gayane Karagyan, Victor A. Krivokhatsky Krivokhatsky http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Kuznetsova, Valentina G. Maryańska-Nadachowska, Anna Khabiev, Gadzhimurad N. Karagyan, Gayane Krivokhatsky, Victor A. Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia) |
title | Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia) |
title_full | Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia) |
title_fullStr | Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia) |
title_full_unstemmed | Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia) |
title_short | Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia) |
title_sort | variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families myrmeleontidae, ascalaphidae, and nemopteridae (insecta, neuroptera, myrmeleontiformia) |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6904352/ https://www.ncbi.nlm.nih.gov/pubmed/31844408 http://dx.doi.org/10.3897/zookeys.894.47040 |
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